"Mr. Qin, what are you painting? It looks like a map. Zhu Yuanzhang was the first to ask. Although he didn't know what Qin Yu was drawing, he thought to himself that if this ability to draw maps with his bare hands was used on marching and fighting......

His hand was as if he had divine power, and the mountains and rivers leaped onto the paper when the charcoal pen passed, much more detailed than the marching map.

"Don't interrupt the parents of the students in the back!" However, Qin Yu had a serious face, "Only students can ask questions in class, parents can only listen obediently, and if they have anything to say, they will talk about it after class." ”

Do not disturb the classroom teacher's lecture, even the school leaders who come down to inspect must abide by it, let alone the parents of the students.

"I'm sorry, it's Huang who is reckless." Zhu Yuanzhang arched his hand, looking a little embarrassed.

The emperor was reprimanded by Mr. Qin? Queen Xu Dama and the others snickered secretly after seeing it. I never expected that Emperor Zhu, who decisively killed and made his ministers tremble, would also have such an embarrassing day.

"Okay, students can ask questions at will." Qin Yu said to the students, "Raise your left hand before asking a question, and only after getting the teacher's approval can you stand up and ask questions." ”

"Excuse me, sir, what kind of picture did you draw, did you use it to march and fight?" Zhu Biao asked first.

"It's not a march, it's a map of the world." Qin Yu said.

"What is a world map?" Zhu Di asked.

"It is the geographical map of the whole world, including seven continents and four oceans, as well as the largest mountains and rivers in each region." Qin Yu said, "The place where we live is called the earth, and the earth is round, you don't know this, right?" ”

"Yes, yes." Zhu Biao replied, "The Later Han Dynasty Taishi ordered Zhang Heng to say in the "Notes on the Armillary Sphere": 'The armillary sky is like a chicken. The celestial bodies are round like projectiles, and the earth is like a rooster in the yellow, and the place where we live is called the earth star, and it is also round like the glowing star. ”

"Yes, you're right." Qin Yu was very satisfied with Huang Biao's answer. The village is too backward, and if they don't even know that the earth is round, then it's a big problem.

The answerer, Zhu Biao, was sweating, and Mr. Qin's question was too biased, covering astronomy and geography. If I hadn't read it in an ancient book before, I wouldn't have been able to answer it.

In the past, they mainly studied Confucianism, and Zhang Heng's Hun Tian theory was not within the scope of the Great Confucian teacher's teaching.

The eldest brother is really the eldest brother, and he is much more knowledgeable than us...... The other three brothers thought to themselves. We have a good grasp of Confucianism, but Mr. just doesn't ask.

Seeing that Zhu Biao was recognized by Qin Yu, Zhu Yuanzhang and Queen Ma also nodded slightly with relief.

At this moment, Qin Yu took out his whip and pointed to the world map, and said, "Let's get to know the world first, the whole world is divided into six sections, namely the Asia-Europe plate, the Pacific plate, the African plate and the American plate...... respectively in these places. ”

He also pointed to the upper part of the water: "The four oceans are the Pacific Ocean, the Indian Ocean, the Atlantic Ocean, and the Arctic Ocean. No, these are the areas. This is the Pacific Ocean, here is the Atlantic ......"

"Mr. Qin, are you sure that you have not drawn the world map of the earth star wrongly?" Zhu Di boldly asked, "The area of the earth and the sea is so large, but the area of the land is so small?" ”

"Your skeptical spirit is worthy of recognition, but it is impossible for the teacher to draw wrong." Qin Yu said, "It is true, the ratio of the area of sea water to the area of land on the earth is seven to three. ”

"Seven to three? The ocean is more than twice the size of the land! Zhu Di was shocked.

"It's unbelievable." Shu King Zhu Chun said.

"I can't believe it either." King Zhu Fan of Qin said.

Zhu Yuanzhang and Queen Ma, who listened carefully to the lecture later, also felt unbelievable after listening to it, in their outdated concepts, they always felt that the land area was larger than the ocean area.

The geographical knowledge that Qin Yu said subverted their inherent cognition.

"I believe what the gentleman says." At this moment, Zhu Biao suddenly stood up and said: "It is recorded in Zhuangzi's "Getaway" that there is a fish in the North Underworld, and its name is Kun. The Kun is so big that I don't know how many thousands of miles it is. ”

"The North Underworld can breed thousands of miles of big fish kun, and the area is definitely not small. The largest creature on land is the elephant, which is extremely small compared to the kun. It follows that the ocean must be larger than the land. ”

"Huang Biao's ability to draw inferences from others and his quick response is commendable." Qin Yu nodded in approval, "The Northern Underworld recorded in the getaway is actually the Arctic Ocean, which is in this place. However, the biggest creature in the ocean is not a kun, but a blue whale. Kun is just a legendary creature, but the blue whale is real. Blue whales are 40 meters long and weigh more than 200 tons. ”

Is there really such a huge creature in the world? The crowd was shocked.

After all, Kun is just a legend, and no one has ever seen it. However, Mr. Qin said that the blue whale with a length of 40 meters and a weight of 200 tons is real, which means that it is possible to be fished up and let everyone see it with their own eyes.

Mr. Qin actually knows that even the largest creature in the ocean knows that his knowledge is really unfathomable, and it really didn't disappoint me, Queen Ma thought to herself.

"Mr. Qin, can my Daming Sailor catch blue whales?" Yan Wang Zhu Di stood up and asked. 、

"Blue whales mainly live near Antarctica, and it takes a lot of effort to catch them in China, but there are smaller fin whales near the Wahai Sea, which are relatively easy to catch." Qin Yu didn't bother to correct him that he thought it was still the Ming Dynasty, and it was necessary to take his time to correct a person's cognition, "The whale is full of treasures all over its body, and if you catch one, you will make a lot of money." ”

Are there whales near Wakai? Zhu Yuanzhang listened to it and immediately remembered: "After we go back, we will order the Daming sailors to go to sea to catch the world's largest creature whale." ”

"Such a behemoth must be a treasure, and we, as the emperor of the Ninety-Five, must get one. And once it is really caught, it can also be confirmed that what Mr. Qin said is true. ”

"Alright, the topic is far away." Qin Yu returned to normal teaching, "Our country is located in the east of the Asia-Europe section. "The whip is on the map," right here. ”

The whip moves along the curve, "This is our border." ”

"We Da Ming, we only occupy such a small piece of land in the world?" Seeing Qin Yu's gesture, the crowd instantly froze.

"My dignified territory is not even one-tenth of the world?" Zhu Yuanzhang's expression suddenly froze, "We have always thought that the Great Tomorrow has occupied most of the world, all the rich land. Outside the territory of the Ming Dynasty, it is an uncivilized and wild land. We are shouting all day long, but in fact we are blindly arrogant? ”

"If what Mr. Qin said is true, then Da Ming will become Xiao Ming."